Stepless speed regulation swing portable fan

Abstract

The utility model relates to the technical field of fans, and provides a stepless speed regulation swing portable fan which comprises a box body, a swing mechanism is arranged in the box body, the swing mechanism comprises a direct current motor fixed to the box body, and a partition plate is fixedly connected to the inner bottom wall of the box body. A second gear drives a crank to rotate, the crank pushes a rocker through a connecting rod, the rocker drives a transverse rod to swing left and right, then the transverse rod drives a V-shaped block to swing, and different from a working mode of a common fan, continuous rotating type fanning is changed into swinging type fanning. Stepless speed regulation of the fanning speed can be achieved through the speed regulator according to different requirements, the cattail leaf fan is installed rapidly and conveniently through the V-shaped block, the cattail leaf fan is fixed through the V-shaped block structure, and installation of various fan handles of different shapes and specifications can be adapted. By means of the technical scheme, the problem that a traditional electric fan is not suitable for old people to use due to the fact that a direct blowing mode is adopted is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, and in particular to a portable stepless speed regulating swing fan. Background Art

[0002] Electric fan, also known as fan or blower, is a household appliance that uses an electric motor to drive the blades to rotate to accelerate the circulation of air. It is mainly used for cooling and circulating air. It is widely used in homes, classrooms, offices, shops, hospitals, hotels and other places. Common household electric fans are essentially axial flow fans, that is, the direction of wind is parallel to the rotation axis of the fan blades.

[0003] There are many varieties and types of household electric fans on the market, but traditional electric fans all adopt direct blowing. For the elderly, after the elderly fall asleep, the fan will blow directly on the elderly for a long time, which will cause the elderly to catch a cold and is not suitable for use by the elderly. Utility Model Content

[0004] The utility model provides a portable swing fan with stepless speed regulation, which solves the problem that traditional electric fans in the related art all adopt a direct blowing mode and are not suitable for use by the elderly.

[0005] The technical scheme of the utility model is as follows: a portable fan with stepless speed regulation and swinging, comprising a box body, a swing mechanism is arranged inside the box body, the swing mechanism comprises a DC motor fixed to the box body, a partition is fixedly connected to the inner bottom wall of the box body, a gear cover is fixedly connected to the back side of the partition, a first gear and a second gear are rotatably connected to the inner wall of the gear cover, the first gear and the second gear are meshed, and at the same time, the output shaft of the DC motor is fixedly connected to the back side of the first gear, a crank is fixedly connected to the front side of the central shaft of the second gear, a connecting rod is hinged to the back side of the crank, a rocker is hinged to the back side of the partition through the shaft, and the other end of the connecting rod is hinged to the back side of the rocker, a through groove is provided on the upper surface of the box body, the top end of the rocker passes through the through groove and extends to the upper part of the box body, the top end of the rocker is fixedly connected to a cross bar, the outer surface of the cross bar is sleeved with a V-shaped block, a card slot is provided on the upper surface of the V-shaped block, a V-shaped clamping block is arranged inside the card slot, the right side of the V-shaped clamping block is rotatably connected to a threaded rod, and a swing fan body is arranged in the card slot.

[0006] A circuit board is installed inside the box, a timing module is installed on the upper surface of the circuit board, a stable power supply module and a speed regulator are installed on the inner wall of the box, and a municipal power supply module is installed on the right side of the box.

[0007] Furthermore, a screw is threadedly connected to the left side of the V-block, and the right end of the screw passes through the V-block and contacts the outer surface of the cross bar. The user can rotate the screw to move the screw to the right so that the right end of the screw contacts the cross bar, thereby fixing the V-block. When disassembling, it is only necessary to reverse the screw to separate the screw from the cross bar, and the user can remove the V-block, which is convenient for disassembly.

[0008] Furthermore, handles are fixedly connected to the left and right sides of the box body, and the outer surface of each handle is provided with an anti-slip cover, which makes it convenient for users to lift the fan. At the same time, the anti-slip cover can effectively increase the friction between the user's hands and the handles, effectively avoiding hand slippage, and the anti-slip cover has a certain flexibility, which can effectively increase the comfort of the user when holding the handles.

[0009] Furthermore, an operation instruction board is fixedly connected to the front of the box body, and an instruction manual is engraved on the front of the operation instruction board. Users can read the instruction manual on the operation instruction board and quickly master the correct operation method, effectively avoiding damage to the fan due to improper operation.

[0010] Furthermore, a speed knob is installed on the front of the box body, and an anti-slip pattern is provided on the outer surface of the speed knob. The swing speed of the fan body can be controlled by the speed knob, thereby achieving control of the wind speed, which is convenient for users to perform control operations.

[0011] Furthermore, two anti-slip seats are fixedly connected to the bottom surface of the box, and the bottom surface of each anti-slip seat is provided with anti-slip grooves. The anti-slip seats can effectively increase the friction between the bottom surface of the box and the desktop, thereby improving the stability of the fan during placement and effectively preventing the fan from shaking during use.

[0012] Furthermore, the diameter of the first gear is smaller than the diameter of the second gear, and the first gear is driven to rotate by the second gear, and the diameter difference between the first gear and the second gear is utilized to reduce the rotation speed of the DC motor.

[0013] Furthermore, the four corners of the box are chamfered to treat the sharp corners of the box, which can effectively avoid accidental collision with the elderly during use, thereby preventing the elderly from being injured.

[0014] The working principle and beneficial effects of the utility model are:

[0015] 1. In the utility model, a DC motor drives the first gear to rotate, and the second gear drives the crank to rotate. The crank pushes the rocker through a connecting rod, so that the rocker drives the cross bar to swing left and right, and then the cross bar drives the V-shaped block to swing. Different from the working mode of an ordinary fan, the continuous rotary fan is changed to a swing fan, and the fan speed can be steplessly regulated according to different needs through a speed regulator. The V-shaped block is used to quickly and conveniently install the cattail leaf fan. The V-shaped block structure is used to fix the cattail leaf fan, which can adapt to the installation of various fan handles of different shapes and specifications. The position of the cattail leaf fan can be adjusted up, down, left, and right. Two cattail leaf fans can also be installed at the same time according to needs. It has a timing function, and shock-absorbing feet are installed at the bottom of the box to ensure that the fan swings smoothly when working. The box structure is compact and easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a front view schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a bottom view schematic diagram of the structure of the utility model;

[0019] Figure 3 It is a top view cross-sectional schematic diagram of the box body of the utility model;

[0020] Figure 4 This is a rear cross-sectional schematic diagram of the box body of the utility model;

[0021] Figure 5 This is a cross-sectional schematic diagram of the gear cover of the utility model;

[0022] Figure 6 This is a schematic diagram of the V-shaped block of the utility model;

[0023] Figure 7 This is the working schematic diagram of this practical circuit.

[0024] In the figure: 1. box body; 2. swing mechanism; 201. through slot; 202. municipal power module; 203. V-shaped block; 204. threaded rod; 205. cross bar; 206. rocker; 207. stable power module; 208. timing module; 209. circuit board; 2010. DC motor; 2011. speed regulator; 2012. partition; 2013. connecting rod; 2014. rotating shaft; 2015. crank; 2016. gear cover; 2017. second gear; 2018. first gear; 2019. V-shaped clamping block; 2020. slot; 3. screw; 4. handle; 5. operation indicator board; 6. speed knob; 7. anti-slip seat; 8. swing fan body. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1

[0027] like Figure 1 to Figure 6 As shown, this embodiment proposes a stepless speed-adjustable oscillating portable fan, including a box body 1, and handles 4 are fixedly connected to the left and right sides of the box body 1. The outer surface of each handle 4 is provided with an anti-slip cover, which makes it convenient for users to lift the fan through the handles 4. At the same time, the anti-slip cover can effectively increase the friction between the user's hand and the handle 4, effectively avoiding the hand slipping phenomenon, and the anti-slip cover has a certain flexibility, which can effectively increase the comfort of the user when holding the handle 4.

[0028] An operation instruction board 5 is fixedly connected to the front of the box body 1, and an instruction manual is engraved on the front of the operation instruction board 5. Users can read the instruction manual on the operation instruction board 5, quickly master the correct operation method, and effectively avoid damage to the fan due to improper operation.

[0029] A speed knob 6 is installed on the front of the box body 1, and the outer surface of the speed knob 6 is provided with anti-slip grooves. The speed knob 6 can control the swing speed of the fan body 8, thereby achieving control of the wind speed, which is convenient for users to perform control operations.

[0030] A swing mechanism 2 is disposed inside the box body 1 , and the swing mechanism 2 includes a DC motor 2010 fixed to the box body 1 .

[0031] A DC motor 2010 is a rotating motor that can convert DC electrical energy into mechanical energy or convert mechanical energy into DC electrical energy.

[0032] The inner bottom wall of the box body 1 is fixedly connected with a partition 2012, and the back side of the partition 2012 is fixedly connected with a gear cover 2016. The inner wall of the gear cover 2016 is rotatably connected with a first gear 2018 and a second gear 2017. The first gear 2018 and the second gear 2017 are meshed with each other. At the same time, the output shaft of the DC motor 2010 is fixedly connected with the back side of the first gear 2018. The diameter value of the first gear 2018 is smaller than the diameter value of the second gear 2017. The first gear 2018 is driven to rotate by the second gear 2017, and the diameter difference between the first gear 2018 and the second gear 2017 is utilized to reduce the rotation speed of the DC motor 2010.

[0033] The front side of the central rotating shaft of the second gear 2017 is fixedly connected with a crank 2015, and the back side of the crank 2015 is hinged with a connecting rod 2013. The back side of the partition 2012 is hinged with a rocker 206 through a rotating shaft 2014, and the other end of the connecting rod 2013 is hinged to the back side of the rocker 206. A through groove 201 is provided on the upper surface of the box body 1, and the top end of the rocker 206 passes through the through groove 201 and extends to the upper part of the box body 1. The top end of the rocker 206 is fixedly connected with a cross bar 205, and the outer surface of the cross bar 205 is sleeved with a V-shaped block 203. The upper surface of the V-shaped block 203 is provided with a slot 2020, and a V-shaped clamping block 2019 is arranged inside the slot 2020. The right side surface of the V-shaped clamping block 2019 is rotatably connected with a threaded rod 204, and the swing fan body 8 is arranged in the slot 2020.

[0034] The left side of the V-block 203 is threadedly connected with a screw 3, and the right end of the screw 3 passes through the V-block 203 and contacts the outer surface of the cross bar 205. The user can rotate the screw 3 to move the screw 3 to the right so that the right end of the screw 3 contacts the cross bar 205, thereby fixing the V-block 203. When disassembling, it is only necessary to reverse the screw 3 to separate the screw 3 from the cross bar 205, and the user can remove the V-block 203, which is convenient for disassembly.

[0035] Example 2

[0036] like Figure 3-4 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment also proposes that a circuit board 209 is installed inside the box 1, a timing module 208 is installed on the upper surface of the circuit board 209, a stable power supply module 207 and a speed regulator 2011 are installed on the inner wall of the box 1, and a municipal power supply module 202 is installed on the right side of the box 1.

[0037] Speed ​​regulators have been widely used in industrial DC motor speed regulation, industrial conveyor belt speed regulation, lighting adjustment, computer power supply cooling, DC fans, etc.

[0038] Two anti-slip seats 7 are fixedly connected to the bottom surface of the box 1, and the bottom surface of each anti-slip seat 7 is provided with anti-slip grooves. The anti-slip seats 7 can effectively increase the friction between the bottom surface of the box 1 and the desktop, improve the stability of the fan during placement, and effectively prevent the fan from shaking during use.

[0039] The four corners of the box body 1 are chamfered, and the sharp corners of the box body 1 are processed to effectively avoid accidental collision with the elderly during use, thereby preventing the elderly from being injured.

[0040] The fan is also equipped with a control circuit, which controls the start, stop, swing angle and fan speed of the motor, plays a role in control, regulation and protection, and makes the swing function more flexible, convenient and safe.

[0041] When in use, the fan is powered by connecting to the municipal power supply through the municipal power supply module 202, and then the fan can be timed through the timing module 208. Then, the speed regulator 2011 is controlled by the speed knob 6 to control the swing speed of the fan. Then, the DC motor 2010 drives the first gear 2018 to rotate, and the first gear 2018 engages to drive the second gear 2017 to rotate. The diameter difference between the two gears is used to reduce the speed of the DC motor 2010. Then, the second gear 2017 drives the crank 2015 to rotate, and the crank 2015 pushes the rocker 206 through the connecting rod 2013, so that the rocker 206 drives the cross bar 205 to swing left and right. Then, the cross bar 205 drives the V-block 203 to swing, and the V-block 203 drives the rocking fan body 8 to swing, thereby realizing the fanning operation.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable fan with stepless speed regulation, characterized in that: The invention comprises a box body (1), wherein a swing mechanism (2) is arranged inside the box body (1), and the swing mechanism (2) comprises a DC motor (2010) fixed to the box body (1); a partition (2012) is fixedly connected to the inner bottom wall of the box body (1); a gear cover (2016) is fixedly connected to the back of the partition (2012); a first gear (2018) and a second gear (2017) are rotatably connected to the inner wall of the gear cover (2016); the first gear (2018) and the second gear (2017) are meshed with each other; at the same time, an output shaft of the DC motor (2010) is fixedly connected to the back of the first gear (2018); a crank (2015) is fixedly connected to the front of the central shaft of the second gear (2017); a connecting rod (2015) is hingedly connected to the back of the crank (2015); 3), the back of the partition (2012) is hinged with a rocker (206) through a rotating shaft (2014), the other end of the connecting rod (213) is hinged with the back of the rocker (206), the upper surface of the box body (1) is provided with a through slot (201), the top end of the rocker (206) passes through the through slot (201) and extends to the upper part of the box body (1), the top end of the rocker (206) is fixedly connected with a cross bar (205), the outer surface of the cross bar (205) is sleeved with a V-shaped block (203), the upper surface of the V-shaped block (203) is provided with a slot (2020), a V-shaped clamping block (2019) is arranged inside the slot (2020), the right side of the V-shaped clamping block (2019) is rotatably connected with a threaded rod (204), and a rocking fan body (8) is arranged in the slot (2020); A circuit board (209) is installed inside the box (1), a timing module (208) is installed on the upper surface of the circuit board (209), a stable power supply module (207) and a speed regulator (2011) are installed on the inner wall of the box (1), and a municipal power supply module (202) is installed on the right side of the box (1).

2. A portable fan with stepless speed regulation according to claim 1, characterized in that: The left side surface of the V-shaped block (203) is threadedly connected with a screw (3), and the right end of the screw (3) passes through the V-shaped block (203) and contacts the outer surface of the cross bar (205).

3. A portable fan with stepless speed regulation according to claim 1, characterized in that: The left and right sides of the box body (1) are both fixedly connected with handles (4), and the outer surface of each handle (4) is covered with an anti-slip cover.

4. A portable fan with stepless speed regulation according to claim 1, characterized in that: An operation indicator plate (5) is fixedly connected to the front of the box body (1), and a user manual is engraved on the front of the operation indicator plate (5).

5. The portable fan with stepless speed regulation according to claim 1, characterized in that: A speed knob (6) is installed on the front of the box body (1), and an outer surface of the speed knob (6) is provided with anti-slip grooves.

6. A portable fan with stepless speed regulation according to claim 1, characterized in that: Two anti-slip seats (7) are fixedly connected to the bottom surface of the box body (1), and the bottom surface of each anti-slip seat (7) is provided with anti-slip patterns.

7. The portable fan with stepless speed regulation according to claim 1, characterized in that: The diameter value of the first gear (2018) is smaller than the diameter value of the second gear (2017).

8. The portable fan with stepless speed regulation according to claim 1, characterized in that: The four corners of the box body (1) are chamfered.

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